Merge "Make sure the color background is only cleared once" into sc-v2-dev am:...

import java.util.Comparator;

import java.util.LinkedList;

import java.util.List;

import java.util.concurrent.atomic.AtomicInteger;

import java.util.function.BiFunction;

import java.util.function.Consumer;

import java.util.function.Function;

                taskDisplayArea.setBackgroundColor(backgroundColor);

            }

            // Atomic counter to make sure the clearColor callback is only called one.

            // It will be called twice in the case we cancel the animation without restart

            // (in that case it will run as the cancel and finished callbacks).

            final AtomicInteger callbackCounter = new AtomicInteger(0);

            final Runnable clearBackgroundColorHandler = () -> {

                if (callbackCounter.getAndIncrement() == 0) {

                    taskDisplayArea.clearBackgroundColor();

                }

            };

            final Runnable cleanUpCallback = isSettingBackgroundColor

                    ? taskDisplayArea::clearBackgroundColor : () -> {};

                    ? clearBackgroundColorHandler : () -> {};

            startAnimation(getPendingTransaction(), adapter, !isVisible(),

                    ANIMATION_TYPE_APP_TRANSITION, (type, anim) -> cleanUpCallback.run(),